Marco <m...@posteo.de> writes:

> At least for IPv4, there are servers that reject connections from IPs
> that don't have a reverse zone with PTR record.

Yes.

But but no one in their right mind do that for IPv6. A missing PTR is
not indicating anything at all.  You might as well reject connections
based on rand(10) < 9 or similar.


Bjørn




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